Mosaic spider



MOSAIC SPIDER Filed MarOhlS, 1939 21 I um nnm J INVENTORS Jasper E.King Vernon R. Powell BY TORNEYS Patented Feb. 6, 1940 UNITED STATES MOSAIC SPIDER Jasper E. King and Vernon R. Powell, Denver,

Cola; dedicated to the free use of the People of the United States of America Application March 16,

5 Claims.

1939, Serial No. 262,204

(Granted under the act of March 3, 1883,as amended April 30, 1928; 3'70 0. (257) This application is made under the act of March 3, 1883, as amended by the act of April 30, 1928, and the invention herein described and claimed, if patented, may be manufactured and 5' used by or for the Government of the United States I of America for governmental purposes without the payment to us of any royalty thereon.

We hereby dedicate the invention herein described to the free use of the People of the United States of America totake effect on the granting of a patent to us.

This invention relates to a device for use in the art of integrating maps commonly referred to as mosaic maps, and it is more particularly concerned with means for transferring the location of selected reference points from a control map to the individual photographs making up a mosaic map. I

The main object of this invention is the provision of a device by means of which mosaic maps may be accurately and rapidly assembled.

The following description considered together with the accompanying drawing will fully disclose this invention, its constructions, arrangements, and combinations of parts, and further objects and advantages thereof will be apparent.

In the drawing:

Figure 1 is an isometric view of an embodiment of this invention attached to a table.

30 Figure 2-is a plan view of the embodiment shown in Figure 1.

Figure 3 is a section along the line 3-3 of Figure 2.

Referring with more particularity to the drawing in which like numerals designate like parts, the numeral 4 designates a clamp member of any suitable type for securing the device to a table 5. A vertical rod 6 is secured to said member 4 and a sleeve 1 is rotatably mounted on said rod 6. A horizontal bar 8 is bracketed to said sleeve 1. A sleeve bracket 9 is slidably mounted on said bar 8, the sliding motion being the only degree of freedom between the bracket 9 and bar 3. A clamping screw It is disposed at a suitable point through the bracket9 to permit selective clamp ing of it to said bar 8.

A vertical sleeve member II is secured to the bracket 9 and slidably carries a vertical rod l2, non-rotatable insaid member I I. The upper end of the rod l2 carries a spring header I3 and a spring I4, is compressibly mounted between it andthe top of the sleeve member H. The lower end of the rod 12 carries the spider assembly. It is shaped to form a cylindrical shank I5, to which shank a plurality of similar horizontal arms is, ii, and l8,and a reference arm l9'are co-hinged and normally held in clamped relation by means of a clamping screw 26 at the lower end of the rod 12. A clamping screw 2! is also mounted through. the sleeve member ll toiclamp it 5 selectively to the rod l2.

Each of the horizontal arms i, ll, I8, and I9 is provided with a sleeve band 22, 23, 24, and- 25, respectively, having clamping screws 26,27, 28, and 29, respectively, and vertical pins 39, 3|, 32, 10 and 33, respectively, adjustably screwed into the bottom of their respective sleeve bands.

The reference arm i9 is preferably longer than the other horizontal arms and carries at its outer end a supporting post or stanchion 3 lsecured to 15 its bottomand a vertical pin 35 slidably mounted through the arm l9, substantially as shown. The pin 35 is provided witha head 35 and an abundant flange 3? to limit its vertical movement. A spring .iil is compressibly mounted between said head 36 and the top of the arm l9 normally holding the pin 35 in an elevated position.

Another sleeve'band 3t is slidably mounted on the horizontal bar 8 and carries a clamping screw it to permit clamping it to said bar 8. 25

The operation of this invention is as follows:

In assembling theindividual photographs of a mosaic map, a mosaic board is first prepared upon which control points are plotted to assist the assembling of the various individual photographs. These photographs are then put together with reference to the control points of the mosaic control board. The difficulty heretofore encountered was in the transference of the control points for each photograph to the photograph itself. By 35 the use of the device above described this difi'iculty is obviated. After the usual control points have been plotted on the control board, the device is clamped to the table With the horizontal bar 8 above the vicinity where a particular photograph 40 is to be located. The sleeve bracket 9, the sleeve bands 22, 23, 2 3, and 25, and the arms l6, I1, l8, and 69 are unclamped and the pins 30, 3|, 32, and 33 are set on the control points that are to be coveredby the particular photograph. The

points of the pins can be brought as close to the board as desired by pressing down on the vertical rod l2 against the action of the spring l4 and clamping it by means of the screw 2|. Also the pins 30, 3i, 32, and 33 may be adjusted individually by screwing them either up or down in their respective sleeve bands 22, 23, 24, and 25. When these pins are properly set, the sleeve bands 22, 23, 24, and 25 are clamped to their respective horizontal arms, and the horizontal arms are clamped to the vertical rod l2. Also, the sleeve bracket 9 is clamped to the horizontal bar 8. The vertical rod [2 may then be unclamped permitting the spring M to elevate the spider assembly. The photograph is then placed on the board beneath the spider assembly and it is accurately fixed in position by means of the control points represented above it by the pin points of the spider.

It is often necessary or convenient to swing the spider temporarily away from the locus of the work, after it has been set to certain control points, at the same time retaining the relative positions of the control points with the spider. This is made possible with this device in this manner: The reference arm I9 is made longer than the other arms l6, l7, and I8 so that the pin 35 projects out of the area of any individual photograph. Accordingly, when the pins 30, 3|, 32, and 33 are fixed over the control points for a particular photograph, the pin 35 is actuated downward against the action of the spring 38 making a small reference mark on the board outside of the locus of the area of the photograph to be placed. Then the sleeve 7 may be unclamped and the entire assembly swung out of position. When it is desired to return the assembly after the photograph is placed, the horizontal bar 8 is brought back to the position in which the point of the pin 35 coincides with the mark previously made by it.

Should it be desired to move the assembly out of position along the horizontal bar 8, the sleeve band 39 is brought up against the sleeve bracket 9 and clamped in position. Then the sleeve bracket 9 can be unclamped and moved into any position between the sleeve band 39 and the hinged point of the horizontal bar 8 and can be returned to its original position by simply moving it back against sleeve band 39. In this manner, an accurate return to the original location of the pins 30, 3|, 32, and 33 is always insured regardless of whether the assembly is moved along the horizontal bar 8, or revolved about the pivot point of the horizontal bar 8, or both.

Having thus described our invention, We claim:

1. A device of the character described comprising a supporting member, a horizontal bar hinged to said supporting member, a sleeve bracket slidably mounted on said arm, means for selectively clamping said bracket to said arm,

a vertical rod slidably engaged with said sleeve bracket, means for selectively clamping said rod to said sleeve bracket, a plurality of horizontal arms each independently hinged tosaid vertical rod, means for clamping said horizontal arms to said vertical rod, sleeve bands slidably mounted on said horizontal arms, means for selectively clamping said bands to said arms, and a vertical pin adjustably secured to each of said sleeve bands.

2. A device of the character described comprising a supporting member, a horizontal bar hinged to said supporting member, a sleeve bracket slidably mounted on said arm, means for selectively clamping said bracket to said arm, a vertical rod slidably engaged with said sleeve bracket, means for selectively clamping said rod to said sleeve bracket, a plurality of mutually unconnected horizontal arms co-hinged to said vertical rod, a clamping screw for clamping all of said horizontal arms to said vertical rod, sleeve bands slidably mounted on said horizontal arms, means for selectively clamping said bands to said arms, and a vertical pin adjustably secured to each of said sleeve bands.

3. A device of the character described comprising a supporting member, a horizontal bar hinged to said supporting member, a sleeve bracket slidably mounted on said arm, means for selectively clamping said bracket to said arm, a vertical rod slidably engaged with said sleeve bracket, means for selectively clampingsaid rod to said sleeve bracket, a plurality of independently mounted horizontal arms co-hinged to said vertical rod, means for simultaneously clamping all of said horizontal arms to said vertical rod, sleeve bands slidably mounted on said horizontal arms, means for selectively clamping said bands to said arms, and a vertical pin adjustably secured to each of said sleeve bands.

4. The device defined by claim 1 having a post secured near the outer end of one of said arms, a vertical pin mounted through said arm near said post, and yieldable means for normally holding said pin in an elevated position.

5. In the device defined by claim 1, yieldable means for normally holding the vertical rod in an elevated position.

JASPER E. KING. VERNON R. POWELLv 

